.sb-container div:nth-child(10n+1){
	background-color: #ea2a29;
}

.sb-container div:nth-child(10n+2){
	background-color: #f16729;
}

.sb-container div:nth-child(10n+3){
	background-color: #f89322;
}

.sb-container div:nth-child(10n+4){
	background-color: #ffcf14;
}

.sb-container div:nth-child(10n+5){
	background-color: #ffea0d;
}

.sb-container div:nth-child(10n+6){
	background-color: #87b11d;
}

.sb-container div:nth-child(10n+7){
	background-color: #008253;
}

.sb-container div:nth-child(10n+8){
	background-color: #3277b5;
}

.sb-container div:nth-child(10n+9){
	background-color: #4c549f;
}
.sb-container div:nth-child(10n){
	background-color: #ca0d86;
}
#music{
	position: absolute;
	right: 20px;
	top: 20px;
	z-index: 3;
	width: 50px;
	height: 50px;
	cursor: pointer;
	animation: rotate 2s linear infinite;
	/* Firefox: */
	-moz-animation: rotate 2s linear infinite;
	/* Safari 和 Chrome: */
	-webkit-animation: rotate 2s linear infinite;
	/* Opera: */
	-o-animation: rotate 2s linear infinite;
}
@keyframes rotate{
	from{
		transform: rotate(0deg)
	}
	to{
		transform: rotate(360deg)
	}
}
@-moz-keyframes rotate{
	from{
		transform: rotate(0deg)
	}
	to{
		transform: rotate(360deg)
	}
}
@-webkit-keyframes rotate{
	from{
		transform: rotate(0deg)
	}
	to{
		transform: rotate(360deg)
	}
}
@-o-keyframes rotate{
	from{
		transform: rotate(0deg)
	}
	to{
		transform: rotate(360deg)
	}
}